Bellevue, WA CPA Firm for S-Corps & Small Businesses

Looking for a CPA in Bellevue? SDO CPA provides virtual tax preparation, bookkeeping, payroll, and fractional CFO services to Bellevue businesses specializing in S-Corps and partnerships. We provide upfront estimates — if scope changes, we discuss it first. Schedule a free consultation.
Serena Do, CPA — Managing Partner of SDO CPA

Serena Do, CPA

Managing Partner | Duncanville, TX (Serving Bellevue Virtually)

18+ Years Experience | AICPA Member

Licensed CPA — Texas State Board of Public Accountancy

With 18+ years of experience helping business owners across the country, I bring specialized expertise to Bellevue’s Technology, SaaS, Professional Services economy. Whether you’re managing equity compensation complexity and R&D tax credit optimization or capitalizing on Washington’s zero state income tax advantage for high-income tech founders, SDO CPA provides the virtual accounting support your business needs.

We offer cloud-based tax preparation, bookkeeping, payroll, and fractional CFO services designed for Bellevue business owners who want proactive guidance — not just annual tax filing.

Key Takeaways: Bellevue CPA Services

  • Virtual CPA services — Full tax, bookkeeping, and advisory support without geographic limitations
  • Washington tax expertise — Washington has no state income tax, but B&O tax on gross receipts applies to most businesses planning and multi-state compliance
  • Industry focus — Specialized experience with Technology, SaaS, Professional Services
  • Transparent pricing — Upfront estimates starting at $300/month; if scope changes, we discuss it first
  • Responsive support — Direct CPA access, same-day responses

Accounting & Tax Services in Bellevue, WA

Bellevue has evolved from a Seattle suburb into a global tech powerhouse with a metro GDP rivaling many mid-sized cities. T-Mobile’s headquarters in the Factoria neighborhood employs over 10,000 workers, while Meta operates its largest campus outside California with 4,000+ employees. Amazon, Microsoft, and Google all maintain significant Bellevue operations along the I-405 corridor, creating one of the densest concentrations of tech talent in the country. With median household income exceeding $130,000, Bellevue business owners frequently manage complex equity compensation, stock option exercises, and multi-state tax implications.

Washington’s B&O tax applies to Bellevue businesses based on gross receipts, with service businesses paying 1.5% and technology companies often qualifying for reduced rates on certain activities. The Eastside’s gaming studios, including Bungie and nearby Valve, along with a growing cluster of AI startups, add specialized accounting demands around R&D tax credits, capitalized software development costs, and investor-ready financial reporting. Bellevue’s position as the top-ranked city for STEM workers (WalletHub) means equity compensation planning is a critical need for both business owners and employees.

SDO CPA works with Bellevue business owners across technology, professional services, and healthcare to structure entities, optimize S-Corp reasonable compensation, and manage the interplay between federal tax obligations and Washington’s B&O tax. For startups in downtown Bellevue’s Spring District or established firms near the Crossroads tech cluster, we provide monthly bookkeeping and fractional CFO services scaled to your stage of growth.

Washington Tax Planning Tip

Washington has no state income tax, but the B&O (Business & Occupation) tax applies to gross receipts at rates varying by classification: 1.5% for service businesses, 0.471% for manufacturing, and 0.484% for retailing. Many Bellevue businesses overpay because they file under the wrong classification or miss available credits. Proper classification review can reduce your B&O liability significantly.

Bellevue is home to over 40,000 small businesses and a population of 151,854. From Technology, SaaS, Professional Services to professional services, Bellevue business owners need CPAs who understand equity compensation complexity and R&D tax credit optimization and can provide year-round tax planning — not just compliance.

CPA Services for Bellevue Businesses

Common Challenges for Bellevue Business Owners

Challenge

Bellevue businesses often face equity compensation complexity and R&D tax credit optimization, making tax planning and cash flow management more complex than standard approaches allow.

Our Approach

We provide proactive tax planning and fractional CFO services tailored to Bellevue’s business environment, helping you handle equity compensation complexity and R&D tax credit optimization with confidence.

Challenge

Many Bellevue business owners struggle to get timely responses from their CPA, especially during busy seasons when questions are most urgent.

Our Approach

SDO CPA provides direct access to your CPA team with same-day response times. No call centers, no waiting weeks for answers.

Challenge

Tax preparation alone doesn’t help Bellevue business owners understand their financial position or make informed decisions throughout the year.

Our Approach

We deliver monthly financial reports with actionable insights, helping you understand cash flow, profitability, and tax liability before year-end.

“SDO CPA restructured our entity for our Series A and optimized our R&D tax credits. Their team understands SaaS metrics and helped us prepare investor-ready financials that closed our round faster.”
— Kevin T., SaaS company founder in Bellevue

How to Get Started With SDO CPA

1

Schedule Your Free Consultation

Book a call to discuss your Bellevue business, current financial setup, and goals.

2

Get Your Custom Proposal

Receive a clear proposal with upfront estimates — if scope changes, we discuss it first.

3

Seamless Onboarding

We connect to your QuickBooks or Xero and organize your books within 30 days.

4

Ongoing Partnership

Monthly reports, proactive tax planning, and year-round CPA access.

Why Bellevue Business Owners Choose SDO CPA

Washington Tax Expertise

We understand Washington has no state income tax, but B&O tax on gross receipts applies to most businesses and help Bellevue businesses maximize tax advantages while managing federal obligations and multi-state complexity.

Transparent Pricing

Clear monthly estimates for standard services. We scope your needs upfront and communicate before any additional work. See our pricing.

Cloud-Based & Virtual

Access your financials anywhere. We work with QuickBooks Online, Xero, Gusto, and Ramp to keep your Bellevue business running smoothly.

S-Corp & Partnership Specialists

Our clients are pass-through entity owners. We handle reasonable compensation analysis, K-1 preparation, QBI optimization, and entity selection.

Responsive Communication

Get answers when you need them. Our team responds within one business day, and you’ll have direct access to your CPA.

Frequently Asked Questions

How much does a CPA cost for a small business in Bellevue?
At SDO CPA, bookkeeping starts at $300-$500 per month for a single entity. Full-service packages including bookkeeping, tax planning, and advisory range from $1,000-$2,000 per month with upfront estimates — if scope changes, we discuss it first. View our pricing.
Can a virtual CPA serve my Bellevue business?
Yes. CPAs can prepare tax returns and provide accounting services for clients in any state. SDO CPA serves Bellevue businesses through secure cloud-based tools including QuickBooks Online, Gusto, and encrypted document sharing with the same quality as a local firm.
Do you specialize in Technology businesses?
Yes. Bellevue’s Technology sector has unique accounting needs including equity compensation planning, SaaS revenue recognition, R&D tax credits, and investor-ready financial reporting that we address with tailored solutions.
What is the difference between a bookkeeper and a CPA?
A bookkeeper records transactions and maintains financial records. A CPA is a state-licensed professional who can prepare and sign tax returns, provide tax planning advice, represent you before the IRS, and offer strategic financial guidance that bookkeepers cannot.
Do you offer fractional CFO services for Bellevue businesses?
Yes. Our fractional CFO services provide cash flow forecasting, budgeting, financial modeling, and strategic planning for Bellevue businesses generating $500K+ in revenue that need financial leadership without a full-time hire.
Should my Bellevue business be an S-Corp or LLC?
It depends on your net income. Generally, businesses earning over $60,000 in net profit may save on self-employment taxes by electing S-Corp status. Use our S-Corp tax calculator to estimate savings, then schedule a consultation for personalized analysis.
How quickly does SDO CPA respond to questions?
We respond to all client inquiries within one business day. For urgent tax matters, we prioritize same-day responses. You’ll have direct access to your CPA — no call centers or gatekeepers.
What accounting software do you work with?
We work with QuickBooks Online, Xero, Gusto for payroll, and Ramp for expense management. We’ll recommend the best setup for your Bellevue business during your free consultation. Learn about our bookkeeping services.

Resources for Bellevue Business Owners

Also Serving the Puget Sound Region

SDO CPA provides virtual CPA services to businesses throughout the Puget Sound Region and Washington.

Ready to Work With a CPA Who Understands Bellevue Businesses?

Schedule your free consultation today. We’ll analyze your tax situation and provide an upfront estimate with no obligation.

Schedule a Call
Licensing & Service Disclaimer: SDO CPA LLC is a Texas-licensed CPA firm serving clients in Washington under CPA practice mobility provisions. We do not maintain a physical office in Washington — all services are delivered remotely via secure video, phone, and digital collaboration tools. SDO CPA does not hold a CPA license in Washington. Services requiring CPA licensure are performed by Texas-licensed CPAs. We do not provide attest services (audits, reviews, or compilations). Per Texas State Board of Public Accountancy regulations (22 TAC §501.82).